With the rapid development of the commodity economy, the sorting task becomes more and more heavy, and the courier companies need to improve the automation degree of express sorting to improve the sorting efficiency.Therefore, some express delivery companies introduce automatic sorting systems. Most of these automatic sorting systems use radio frequency identification technology or bar codes as a medium to transmit information.In view of the problem of excessive cost of radio frequency identification and the problem of the susceptible impact of bar code, it is proposed to use two-dimensional code as information.The low cost and self-correcting ability of the two-dimensional code can well solve the above problems.The design and implementation of a express sorting system based on two-dimensional code recognition is introduced in this paper.